Results 11 to 20 of about 932 (145)

SWAMP: A new experiment for simulating permafrost warming and active layer deepening on the Tibetan Plateau

open access: yesMethods in Ecology and Evolution, Volume 14, Issue 7, Page 1732-1746, July 2023., 2023
Abstract Our knowledge on the responses of permafrost ecosystems to climate warming is critical for assessing the direction and magnitude of permafrost carbon‐climate feedback. However, most of the previous experiments have only been able to warm the air and surface soil, with limited effects on the permafrost temperature.
Yuxuan Bai   +8 more
wiley   +1 more source

Effects of interactions between anthropogenic stressors and recurring perturbations on ecosystem resilience and collapse

open access: yesConservation Biology, Volume 37, Issue 1, February 2023., 2023
Abstract Insights into declines in ecosystem resilience and their causes and effects can inform preemptive action to avoid ecosystem collapse and loss of biodiversity, ecosystem services, and human well‐being. Empirical studies of ecosystem collapse are rare and hampered by ecosystem complexity, nonlinear and lagged responses, and interactions across ...
David A. Keith   +8 more
wiley   +1 more source

A novel red‐edge spectral index for retrieving the leaf chlorophyll content

open access: yesMethods in Ecology and Evolution, Volume 13, Issue 12, Page 2771-2787, December 2022., 2022
Abstract The leaf chlorophyll content (Chlleaf) is a crucial vegetation parameter in carbon cycle modelling and agricultural monitoring at local, regional and global scales. The red‐edge spectral region is sensitive to variations in Chlleaf. An increasing number of sensors are capable of sampling red‐edge bands, providing opportunities to estimate ...
Hu Zhang   +15 more
wiley   +1 more source

Erosive Rainfall Thresholds for Five Typical Soils in Water Erosion Region of China [PDF]

open access: yes, 2022
[Objective] The practical thresholds separating erosive from non-erosive rainfall events were determined to effectively reduce the workload of soil erosion prediction, and to provide references for regional soil erosion prevention.
Liu Baoyuan   +3 more
core   +1 more source

Comparison of Particle Size Distributions Determined by Pipette Method and Scanning Electron Microscopy for Typical Soils in Water Erosion Region of China [PDF]

open access: yes, 2023
[Objective] The particle size distributions (PSD) of different soils measured by scanning electron microscopy (SEM) and by the pipette method (PM) in the water erosion region of China was compared in order to provide a reference for the determination of ...
Bai Xue   +4 more
core   +1 more source

Spatial-temporal Variation of Water Yield in Nanbei Panjiang River Basin Based on InVEST Model [PDF]

open access: yes, 2023
[Objective] The temporal and spatial variation characteristics of water yield and differences in the water yield function for different land use types, soil types, and topography in the Nanbei Panjiang River basin were analyzed in order to provide a ...
Chen Quan   +5 more
core   +1 more source

Factors Influencing Spatial and Temporal Characteristics of Organic Carbon Loading to Rivers From Sediment in Small Watersheds in Sugarcane Areas [PDF]

open access: yes, 2023
[Objective] The spatial and temporal characteristics and influencing factors of soil organic carbon loss from sugarcane in a typical small watershed in the red soil area of Guangxi Zhuang Autonomous Region were determined, and the spatial and temporal ...
Chen Tingting   +8 more
core   +1 more source

Effects of Native Forest Conversion on Soil Labile Organic Carbon and Enzyme Activity in Northwestern Hunan Province [PDF]

open access: yes, 2023
[Objective] The response of soil labile organic carbon components and enzyme activities to natural forest conversion was analyzed in order to provide a scientific basis for predicting regional soil health evolution and environmental change.
Li Xue   +5 more
core   +1 more source

九龙江流域地表水锰的污染来源和迁移转化机制 [PDF]

open access: yes, 2018
锰是人体必需微量元素,但近年来河流湖库等地表水锰超标现象时有发生,威胁供水安全.本文于2016—2017年在福建省九龙江流域开展水系沿程梯度调查及机理实验,结合历史监测资料综合研究,探明九龙江锰含量的时空分布与迁移转化规律,揭示九龙江锰的污染来源、超标成因与调控机制.结果表明,溶解锰高值及超标站位集中在北溪上游矿区支流和干流部分水库,且主要发生在枯水期;上游矿区支流颗粒锰含量最高,随后从上游到下游沿程递减,且与总悬浮颗粒物(TSM)和pH显著正相关(p7.8)环境促进亚热带红壤颗粒富集锰 ...
姜艳   +6 more
core   +1 more source

Indian Pangolin in Lamjung Requires Urgent Attention 尼泊尔拉姆琼县地区的印度穿山甲急需关注

open access: yesWildlife Letters, Volume 2, Issue 4, Page 204-213, December 2024.
This study documented the first evidence of the Indian pangolin in Lamjung district, Nepal, finding three burrows and rescue evidence in Simalchaur Naringhat Community Forest. The burrows identified at an elevation of 530 m and characterized by moderate crown and ground cover (26%–50%), a 25° slope, and predominantly red soil, are indicative of a ...
Asmit Neupane   +4 more
wiley   +1 more source

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